/*
 * SPDX-FileCopyrightText: Copyright (c) 2022-2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: Apache-2.0
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <cuda.h>

namespace nvimgcodec {

bool cuInitChecked();

// /**
//  * Simple RAII device handling:
//  * Switch to new device on construction, back to old
//  * device on destruction
//  */
class DeviceGuard {
 public:
  /// @brief Saves current device id and restores it upon object destruction
  DeviceGuard();

  /// @brief Saves current device id, sets a new one and switches back
  ///        to the original device upon object destruction.
  //         for device id < 0 it is no-op
  explicit DeviceGuard(int new_device);
  ~DeviceGuard();
 private:
  CUcontext old_context_;
};

} // namespace nvimgcodec


